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MATTER MATTERS
MATTER MATTERS
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Middle School- Atomic Theory
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
The mass number of an element is equal to both
protons, neutrons
protons, electrons
neutrons, electrons
2
Rutherford showed that most of the mass is concentrated in its center.
False
True
3
The same number and kinds of atoms on both sides of a chemical equation follows the
Buoyancy Principle
Law of Density
Electrostatic Configuration Law
Law of Conservation of Mass
4
The smallest part of an element that is still that element
electron
neutron
proton
atom
5
Which phrase best describes a quark?
particles that make up protons and neutrons
similar atoms
section of the electron cloud
green ray
6
The diagram represents a
liquid
BEC
gas
solid
7
Jesus said that Christians would be know by
their love for each other
looking holy
their good deeds
patience
8
Sublimation
state change from gas to solid
state change from solid to gas
state change from solid to liquid
state change from liquid to gas
9
Two atoms with different numbers of neutrons are known as
isotopes
twins
pretend since they don't exist
positively lucky
10
The results of Thomson's experiments led him to conclude that
cathode rays are made up of negatively charged particles
atoms have a consistent neutral charge throughout
charged plates do not affect the path of a cathode ray tube
atoms are negatively charged
11
The atomic number represents the number of protons.
False
True
12
The Bohr model of the atom proposed that electrons
are located in the electron cloud
are paired orbitsr with protons
are located in the nucleus
move in circular orbits around the nucleus
13
The correct order for the atomic theory timeline is...
Democritus, Thomson, Dalton
Democritus, Dalton, Thomson
Democritus, Bohr, Thomson
Democritus, Dalton, Bohr
14
Neutral particle found in the nucleus.
proton
quark
electron
neutron
15
Particle with one negative charge
neutron
proton
electron
negatron
